Also question is, what is the difference between a lodger and tenant?
The main difference between a lodger and tenant is that a lodger (legally known as a 'licensee') is someone who lives in the same property as you. Tenants, by contrast, are people who pay rent for a property you own but don't live in; in this respect, you're classed as a live-out landlord.
Also, can you have a lodger if you rent? Not everyone is allowed to take in a lodger. Tenants living in a rented house owned by an individual or a local authority may have the right to take in a lodger should their landlord agree to this. Use a proper Lodger Agreement. You can buy one cheaply here.
Moreover, do you have to declare a lodger?
If you need to pay tax If your income from your lodger is more than £7,500 for the tax year, you have two options: Pay tax on the gross (before tax) income minus the tax-free threshold, but with no allowance for expenses.
What is an excluded lodger?
If you rent a room in your landlord's home and share living space with them such as the bathroom or kitchen, then you might be what's commonly known as a lodger. Lodgers who share accommodation with their landlord are also known as 'excluded occupiers'.